Water-soluble product from fatty acids occurring in wool fat



OFFICE Y GUSTAV MAUTHE, OF OOLOGNE-HOLWEIDE, AND ALFRED THAUS S, OF COLOGNE-DEUTZ, GERMANY, ASSIGNORS T GENERAL ANILINE WORKS, INC., 01 NEW YOB K, N. Y., A.

CORPORATION 011' DELAWARE WATER-SOLUBLE PRODUCT FROM FATTY ACIDS OCOUBBING IN WOOL FAT No Drawing. Application filed January 31, 1929, Serial No. 83,688, and ln Ge rmany February 7, 1928,

The present invention concerns a modification and further development of the process described in the copending application Ser. No. 240,625 filed December 16, 1927 for the manufacture of water soluble products fromthe fatty acids occurring in wool fat and consists in subjecting sai fatty acids, prior to sulfonation,-to a treatment with oxygen or with gases containing oxygen at an elevated tem erature.

The sai parent application describes a process for the manufacture of water soluble products from the fatty acids occurring in wool fat by a treatment with sulfonating agents with the addition of a phenol. The resulting products are distinguished by their good pe tonizing and protective colloid action an accordingly are well suited for the emulsification of sparingl soluble or insoluble substances and for t e stabilization of easily precipitatin solutions, such as for example, thosev of t e 2.3-hydroxy-naphthoic acid arylides'which may be represented by the general formula:

moved by the current of gas, and at the same time the acid number of the acid mixture sinks considerably, which must probably be ascribed to anhydride formation,

'-"since the saponificationnumber only changes slightly. Furthermore the said treatment also appears to involve a partial oxidation and polymerization of the unsaturated fatty acids. l v

The treatment of the fatty acids occurring in wool fat with oxygen ma be performed by heating the former to the temperatures above mentioned, while leading a current of oxygen or air throu 'h the mixture and stirring. In many cases it will advantageously mainly depending on the temperature and a the catalyst used, about 4 to 20 hours being mentioned by way of example. The products thus obtainable are then subjected to a sulfonation by treating the same with a sulfonation agent, such as sulfuric acid monohydrate, chlorosulfonic acid and the like, in the presence of a phenol, whereby products are obtained forming solid, dark masses, easily soluble in hot water, exerting especially good peptonizing and protective colloid properties and being of great value for the preparation of stable alkaline aqueous solutions of 2.3-hydroxy-naphthoic acid arylides, even in the presence 'of calcareous water. Also dificultly soluble ar lides of 2.3-hydroxy-naphthoid acid, suc as 2-hydrox naphthoic acid ,B-naphtha'lide can be easily brought into aqueous solution by means of our new products, the solutions remaining clear even after standing for several days. The usually prescribed employment of formaldehyde has also proved advantageous, since the solutions are still more stable in the presence of formaldehyde.

The following example illustrates our invention without limitin it thereto EwampZe.-200 parts y weight of com- .mercial fatty acid derived from wool fat- (acid number 114,2 saponification number 137,8, iodine number 28,6) are heated for about 8 hourson an oil bath at about 180 to 200 C while a vigorous current ofair 'iscause'd toi'pass through. 170 parts by weight of a final product are thus obtained, whidh possesses the acid number 65,1, saponification number 157,5 and iodine number 28,4. v

150 parts by weight of the product thus obtained are molten together with 50 parts by weight of phenol at 5060 0., the homogeneous mixture is cooled to 30 (1., stirred and treated in the course of 4 hours with 122 parts b weight of sulfuric acid monohydrate, t e temperature being maintained between about -35 C. 300 parts by weight of fuming sulfuric acid of 20% strength are then caused to run in at the same temperature in the course of 8 hours, after which the mixperature is raised to 60 C. The reaction product is then precipitated by the addition of a saturated aqueous sodium sulfate solution. On standing for 2-3 hours at 80 C. the se aration is completed, and then the salt solution is drawn off and the dissolving and saltin out are repeated until sulfuric acid is no onger present. The crude product is then treated with 5-9 parts by weight of concentrated n-butyl alcohol and 40 parts by wei ht of caustic soda lye,.contain1ng M1511 and left to stand for some time at 80 0., whereby the last traces of sulfate so1ution separate as the lower layer. The upper layer is the final product, which dissolves most readily in hot water with a weakly acid reaction. At room temperature it is a semisolid, dark, butter-like mass. It is a valuable auxiliary substance in the preparation of stable solutions of 2.3-hydroxy-naphthoic acid arylides.

5 grams of B-hydroxy-n'aphthoic acid-B- naphthalide are made into a paste with from 1 to twice the uantity by weight of the product described above and a little hot water is added until a uniform magma has been formed, 15 ccm. of a caustic soda solution of 34 B. and about liter of hot water are then added and the mixture is boiled until solution occurs, diluted to one liter and 5 com. of an aqueous formaldehyde solution of stren th are added. The solution thus obtainable is stable even after standing for several days.

We claim 1. Process which comprises reacting upon the fatty acids occurring in wool fat with air at a temperature between about 100-300 C. and sulfonating the products thus obtainable in the presence of a phenol.

2. Process which comprises reacting upon the fatty acids occurring in wool fat with air at a temperature between about 100- 300 C. in the presence of a catalytically acting substance of the kind usually applied for v at a temperature of about 100-300 C..for

about 4 to 20 hours, and sulfo'nating the products thus obtainable in the presence of phenol.

the fatty acids occurring in wool fat with air at a temperature of about 100-300 C. for about 4 to 20 hours in the presence of a catalyticall acting substance of the kind usually applied for the manufacture of linseed oil varnishes, and sulfonating the roducts thus obtainable in the resence of .p enol.

5. Process which commercial fatty acids derived from wool fat with air at about 180200 C. for about 8 hours, adding-to 150 parts by wei ht of the product thus obtainable -60 parts y weight of phenol, 122 parts by weight of sulfuric acid monohydrate, maintaining the temperature between about 25 and 25 C. for about 4 hours, adding 300 parts by weight of fuming sulfuric acid of 20% strength and stirring the mixture at 2535 C. for about 1 day.

6. The products being obtainable according to the process 'claimedin claim 1, said products being semi-solid, dark, butter-like .masses easily soluble in hot water.

7. The products-being obtainable accord ing to the process claimed in claim 3, said products being semi-solid, dark, butter-like masses, easily soluble'in hot water. y

8. The product being obtainable according to the process claimed in claim 5, said product being ase'mi-solid, dark, butter-like mass, easily soluble in hot water.

4. Process which comprises reacting uponcomprises reacting upon 9. The process which comprises reacting upon the atty acidsoccurring in wool fat with a gas containing oxy en,'at a tem rature between about 100 an 300 C., an sul fonating the products thus obtained in the presence of a phenol.

10. The fprocess which comprises reacting upon the atty acids occurring in wool fat with a gas containing oxygen, at a temperature between about 100 and 300? C., in the presence of a catalytically acting substance,

usually applied for the manufacture of linseed 011 varnishes, and sulfonating the products thus obtained in the presence of a phenol. In testimony whereo we have hereunto set our hands. 1

GUSTAV MAUTHE. [n s.] ALFRED THAUSS. [L. s.]

CERTIFICATE or CORRECTION. reeeet No. 1,7843. Granted December 16, 1930, to

cosrav MAUTHE-ET AL.

It ie hereby certified that error appears in the printed specification of the ave numbered patent requiring correction as follows: Page 1, lines 79 and 80, for "Z-hydroXy-napthoic acid" read 2-hydroxy-3-naphthoic acid; page 2, line 92, for "25 and 25C" read 25 and 35C; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Qfiice.

Signed and seaied this 3rd day of February, A. D. 1931.

. M. J. Moore, (Seei) Acting Commissioner of Patents. 

